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Convert image files with our easy-to-use and free tool. Our tool lets you upload a KTX (Khronos Texture) file and, from this, create a new image saved in the AVIF (AV1 Image File Format) format that you can then download and edit within image file editors or use for high-definition printing applications. Our conversion tool can also batch convert multiple KTX image files; up to 25 files at a time can be converted.
Along with converting KTX image files to AVIF, our tool allows you to also adjust the image with some simple effects, such as applying a grayscale filter to the image. These additional options are available within the Options tab. Along with grayscale, you can also mirror or flip the image if needed. For single KTX file uploads, you will also see options to resize and rotate your image.
This option can be used to rotate the image in 90° increments.
When selected, this option will flip the image vertically.
When selected, this option will mirror the image horizontally.
When checked, this will apply a grayscale filter to the image, turning any color image into a grayscale image.
When checked, this will apply a negative filter to the image, inverting all the colors within the image.
| Extension | KTX |
| Full Name | Khronos Texture |
| Type | Image |
| Mime Type | image/ktx2 |
| Format | Binary |
| Tools | KTX Converters, Create Cookie Cutter, KTX Viewer |
A KTX file is an image file format created by the Khronos Group as a means to store detailed texture images in a highly compact format. The format can store single textures, mipmap textures, cubemap textures, and more.
The image information within the KTX file is stored in a compressed and lossless format, enabling large textures to be saved with a minimal file size compared to other image formats such as PNG.
| Extension | AVIF |
| Full Name | AV1 Image File Format |
| Type | Image |
| Mime Type | image/avif |
| Format | Binary |
| Tools | AVIF Converters, Create Cookie Cutter, AVIF Viewer |
| Open With | Paint.NET |
The AVIF format is an image-based container format designed to store images or image sequences that are compressed with the AV1 compression algorithm. The format has been around since 2019 and is based on the HEIF container format, and as such, it competes with the HEIC image format.
During tests, the format has shown to perform better than JPG files, not just in the reduced file size but in overall image quality. Support for the format is growing and is already supported in the Chrome and Firefox web browsers. AVIF files can also be opened in many 2D image editing applications.
First click the "Upload..." button, select your KTX file to upload. Select any configuration options. When the KTX to AVIF conversion has completed, you can download your AVIF file straight away.
We aim to process all KTX to AVIF conversions as quickly as possible, this usually takes around 5 seconds but can be more for larger more complex files so please be patient.
We aim to create the most accurate conversions with our tools. Our tools are under constant development with new features and improvements being added every week.
Yes, of course! We do not store the KTX file you submit to us. The resulting AVIF file, once created is deleted 15 minutes after upload and the download link will expire after this time.
Yes! Our KTX to AVIF tool will run on any system with a modern web browser. No specialist software is needed to run any of our conversion tools.
Yes. Although you can use an Ad Blocker, if you like our KTX conversion tool please consider white-listing our site. When an Ad Blocker is enabled there are some conversion limits on some of our tools and processing/conversion times will be longer.
Yes. When you have converted your KTX to AVIF, there is a "Feedback" option that you can use to let us know of any issues you encountered when converting your file.
Yes! Our KTX tool supports full batch conversions. You can upload up to 25 and KTX files at a time. Our tool will convert them all as quickly as possible. Once completed, you can either download the AVIF files individually or download them all in a single ZIP file.
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